发明名称 Method for attaching an end bead to a musical instrument string
摘要 A metallic end bead is attached to the main wire of a musical instrument string by providing the bead in apertured form, roughening or otherwise irregularizing its hole surface and then plastically deforming it to press its hole surface irregularities into the surface of a wire inserted through the hole. The bead has tapered end portions to inhibit cracking during the deforming step. The process is one lending itself to economical mass production of beaded strings and the beads may be provided with either a matte or polished finish on their visible surfaces.
申请公布号 US4164806(A) 申请公布日期 1979.08.21
申请号 US19770843210 申请日期 1977.10.18
申请人 NATIONAL MUSICAL STRING COMPANY 发明人 STONE, W. NORMAN;ALLMANSBERGER, ROBERT A.
分类号 B21F15/00;B21K25/00;B44B5/00;G10D3/10;(IPC1-7):B21D39/00;B23P11/00 主分类号 B21F15/00
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